petersen



(No Modem" 2 sheetssheet 1Q E'. A.. o. PBTERSENQ BAKERS OVEN. No. 252,054.. Almtenwd 1211.121882 UNITED STATES PATENT OEEICE` EDUARD A. C. PETERSEN, OF CHICAGO, ILLINOIS, ASSIGNOR OF ONE-HALF TO HENRY PIPER, OF SAME PLACE. y

BAKERS OVEN.

SPECIFICATION forming part of Letters Patent No. 252,054, dated January 10, 1882.V

Application filed October 19, 1881. (No model.)

To all whom t may concern Beit known that I, EDUARD A. C. PETER- SEN, of Chicago, in the county of Cook and State ot' Illinois, have invented certain new and useful Improvements in Bakers Ovens; and I do hereby declare that the following is a full,clear,and exact description thereof, reference being had to the accompanying drawings, and to the letters of reference marked thereon, which form a part of this specification.

The object of this invention is to produce an oven for bakers use in which the hearth or baking-chamber is entirely separated from the nre-chamber and heating-dues, and in which a continuous operation is combined with an economical consumption ot' fuel 5 and the invention consists in the construction of the oven, as hereinafter described and specifically claimed.

- In the accompanying draw-ings,Fgurel represents a longitudinal vertical section of the oven; Fig. 2, a sectional plan on line uu in Fig. 1; Fig. 3, avertical section on line wat in Fig. 1 5 Fig. 4, a sectional plan on line y y in Fig. 1, and Fig. 5 a sectional plan on line z a in Fig. l.

Likeletters represent correspondingparts in all the figures.

A A denotes the two re-chambers; a, the grate bars, and B the ash-pit.

b b are a series of flues that lead from the re-places underneath the hearth, and communicate at the rear end of the oven with corresponding vertical ues, d d.

C is the hearth or baking-chamber, the inlets c leading to which are above the fuel-openings ofthe fire-chambers, and are arranged to be closed by a trap-door-in any usual manner.

The ceiling to the hearth is supported on a series of lon gitudinally-arranged T-bars, e, and intermediate to these, and underneath theceiling, are placed a series of iron pipes, f, each of which communicates with one of the vertical ues d. These pipes f,formin g the return-dues for the gases, each communicate again with a horizontal flue, g, and all these flues g lead into a chamber, h, that communicates with the chimney D.

Openings i are fleft in the front wall, one in line with each iiue, for cleaning the iues of soot and ashes, and each of these openings i is closed by a removable cup-shaped door, j.

The body ot' the oven is built of common brick lined with fire-brick, and the flues b, d,

and g are built entirely of fire-brick..

A bakers oven constructed in the above-described manner has very large heating-surfaces, and the heat from the gases, absorbed by the bricks and pipes, is distributed in a manner to insure a uniform radiation of heat into the hearth from the bottom and into the baking-chamber from the top, so that bread or cakes will be baked thoroughly from all sides, which is of great importancewith such ovens.

The hearth and baking-chamber, not coming into direct contactwith the re and gases, are kept entirely free of coal and ashes, so that the baking can be carried on continuously.

1 am aware that it is not new to construct bakers ovens with several `tiers of bakingchambers and heating-lines passing from the furnace up to and around said baking-chambers, and such I do not claim; but I am not aware of any device Where such ues enter and extend longitudinally through said bakingchambers, whereby thela'rgest possible amount of heat is directly absorbed by the said cha-mbers, instead of being partially absorbed by the dividing-walls, as would be the casein the devices referred to.

What I claim is,-

1. A bakers oven having heating-dues b below the hearth andiron return-dues f placed underneath the ceiling of and within the bakingchamber, both ues b and f communicating through vertical ues d, all substantially as described and shown.

2. Abakers oven consisting of baking-chamber C, tire-chambers A, flues b d g,iron returniiuesf, extending longitudinally through said baking-chamber, and chimney D, all constructed and arranged substantially in the manner and for the purpose set forth.

In testimony that I claim the foregoing as my invention I affix my signature in presence of two witnesses.

EDUARD A. C. PETERSEN.

Witnesses:

F. W. KASEHAGEN, EMIL H. FROMMANN 

